APA-viite (7. p.)

Spedding, C. R. W. (1979). An introduction to agricultural systems. Applied Science Publishers.

Chicago-viite (17. p.)

Spedding, C. R. W. An Introduction to Agricultural Systems. London: Applied Science Publishers, 1979.

MLA-viite (9. p.)

Spedding, C. R. W. An Introduction to Agricultural Systems. Applied Science Publishers, 1979.